How Does a Four-Wheel Drive Vehicle Undergo Annual Inspection?

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Here is a detailed introduction to the annual inspection process for four-wheel drive vehicles: 1. Difference between four-wheel drive and two-wheel drive vehicles: Four-wheel drive vehicles can only use the idle condition method for exhaust emission testing, while two-wheel drive vehicles use the simulated driving condition method. 2. Inspection and drive type: Vehicle inspection is not related to the vehicle's drive type. 3. Vehicle annual inspection system: The vehicle annual inspection system is determined by the number of seats. Vehicles with fewer than seven seats require an on-site inspection every six years, while vehicles with seven or more seats require inspection every two years. For vehicles with fewer than seven seats, whether they are four-wheel drive or two-wheel drive, they are exempt from inspection within the first six years.